MESON Chess Problem Database

Problem Display
PID: 216402 (5Kn1/B2pp3/2p3p1/1R1pk3/1Qn1N2P/6PB/b2N4/b2R4 w - - 0 1)

van Atten, Jasper

Probleemblad, 1980

5Kn1/B2pp3/2p3p1/1R1pk3/1Qn1N2P/6PB/b2N4/b2R4

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Bc3
      • 2.Qxc3#
    • 1...Sb2
      • 2.Sf3#
      • 2.Bd4#
      • 2.Qc3#
      • 2.Qd4#
    • 1...Sa3
      • 2.Sf3#
    • 1...Se3
      • 2.Sf3#
    • 1...Sa5
      • 2.Sf3#
    • 1...Sb6
      • 2.Sf3#
    • 1...Sd6
      • 2.Sf3#
    • 1...Sf6
      • 2.Qxe7#
    • 1...Sh6
      • 2.Qxe7#
  • Tries
    • 1.Rxd5+?
      • 1...Kxd5
        • 2.Qc5#
      • 1...cxd5!
    • 1.Qxc4?
      • threat
        • 2.Sf3#
      • 1...Bd4
        • 2.Bxd4#
        • 2.Qxd4#
      • 1...Bxc4!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Sxd7#
      • 1...Kd4
        • 2.Sxc4#
      • 1...Kd6
        • 2.Bb8#
      • 1...Kf6
        • 2.Sxd7#
      • 1...Sb6
        • 2.Qf4#
      • 1...Sf6
        • 2.Sd3#
      • 1...d6
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • B(a);N_GUARD::QAB(E),XB(a)
    • S(c);::S(B)
    • S(j);N_GUARD::QAR2(E),XP(i)
  • Tries
    • Try
      • R(H);CHECK,XP(d)
      • Vars
        • K(e);P-FLIGHT,XR(H)::QAR1(E)
      • Refutation
        • P(f);XR(H)
    • Try
      • Q(E);XS(c)
      • Threat
        • S(B)
      • Refutation
        • B(b);XQ(E)
  • Actual
    • S(F);N_PINP(d)
    • Threat
      • S(F),XP(h)
    • Vars
      • K(e);P_SPINS(c),S_FLIGHT::R(A)+S(B),XS(c)
      • K(e);S_FLIGHT::B(I)
      • K(e);S_FLIGHT::S(F),XP(h)
      • S(c);OGATE::QAB1(E)
      • S(j);SBLOCK::S(F)
      • P(h);::S(F)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).